I have to increase the number of Fourier frequencies by adding 500 zeros to the end of the 27-sample-long signal.

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Chris 2021-10-24

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回答： Image Analyst 2021-10-24

fs = 250;

t = 0:1/fs:0.107;

L = length(t);

x1 = sin(2*pi*50*t)+0.3;

fftx1=fft(x1)

freqHz = (0:1:length(x1)-1)*fs/L;

plot(freqHz,fftx1,'-o')

I have to increase the number of Fourier frequencies by adding 500 zeros to the end of the 27-sample-long signal.

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Image Analyst 2021-10-24

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https://ww2.mathworks.cn/matlabcentral/answers/1570618-i-have-to-increase-the-number-of-fourier-frequencies-by-adding-500-zeros-to-the-end-of-the-27-sample#answer_815298

Again, another duplicate question answered here:

https://www.mathworks.com/matlabcentral/answers/1570303-how-to-add-zero-points-in-a-function#comment_1797503

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